International Journal of Concrete Structures and Materials

Korea Concrete Institute (한국콘크리트학회)
권호 표지
DOI QR코드

DOI QR Code

A Mechanical Model of the End Anchorage Zone of Prestressed Concrete Members

  • Published : 2006.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

It is expected that recent development of mechanical models will soon supersede previous empirical methods of detailing. In this study, a mechanical model is proposed to analyze the behavior of the anchorage zone of prestressed concrete members. The main characteristics of the proposed model lies in its rational consideration of material properties such as concrete strength in biaxial stress state and that of local zone reinforced by spirals. The shear friction strength of concrete surrounding a spiral is also considered. The computational results of the proposed model as well as the existing Strut-and-Tie model(STM) and nonlinear finite element analysis are compared with experimental results. The results of the comparison revealed that the proposed model showed better prediction of the failure mode as well as the failure load. Additionally, the proposed model also explained the three-dimensional failure mechanism very well, while other methods based on two-dimensional analysis could not do so well.

Keywords

References

  1. Schlaich. 1., Schafer, K., and Jennewein, M., 'Towards a Consistent Design of Structural Concrete,' PCI Journal, Vol.32, No.3, May-June 1987, pp.74-15
  2. Guyon, Y.,Prestressed Concrete, John Wiley and Sons, New York, 1953
  3. Leonhardt, F. and Monnig E., Vorlesungen ber Massivbau, dritter Teil, Grundlagen zum Bewehren in Stahlbetonbau, Springer-Verlag, 1977
  4. Nielsen, M. P, Limit Analysis and Concrete Plasticity, The University of Denmark, 1984
  5. Thurlimann, B., Marti, P., Pralong, 1., Ritz, P.,and Zimmerli B, Anwendung der Plastizitdtstheorie auf Stahlbeton, Institut fur Baustatik und Konstruktion, ETH ZUrich, Autographie zum Fortbildumgskurs fur Bauingenieure aus der Praxis, April, 1983
  6. Schlaich,1. and Weischede, D., 'Zum methodischen Bemessen und Konstruieren,' DAfstb Heft 150, 1982
  7. Schlaich, 1. and Schafer, K., 'The Design of Structural Concrete,' The University of Stuttgart, IABSE workshop New Delhi, 1993
  8. Ahamd, S. H. and Shah, S. P., 'Stress-Strain Curves of Concrete Confined by Spiral Reinforcement,' ACI Journal, Nov-Dec., 1982, pp.484-490
  9. Vecchio, F. J. and Coliins, M. P., 'Compression Response of Cracked Reinforced Concrete,' ASCE Journal of Structural Engineering, Vo1.119, NO.12, Dec., 1993, pp.3590-3610 https://doi.org/10.1061/(ASCE)0733-9445(1993)119:12(3590)
  10. Muttoni, A., 'Die Anwendbarkeit der Plastizitdtstheorie in der Bemessung von Stahlbeton,' Institut fur Baustatik und Konstruktion ETH Zurich, Juni, 1990
  11. Collins, M. P. and Mitchell, D., 'Prestressed Concrete Structures,' Prentice Hall, Englewood Cliffs, New Jersey, 1990
  12. Hawkins, N. M., 'The Bearing Strength of Concrete for Strip Loadings,' Magazine of Concrete Research, Vol.22,No.71, June 1970, pp.87-98 https://doi.org/10.1680/macr.1970.22.71.87
  13. Kanellopoulos, A., Zum unelastischen Verhalten und Bruch von Stahlbeton, Institut fur Baustatik und Konstruktion, ETH Zurich, Bericht Nr.153, 1986, 86pp
  14. Richart, F. E., Brandtzaeg, A., and Brown, R. L., The Failure of Plain and Spirally Reinforced Concrete in Compression, University of Illinois, Engineering Experiment Station, Bulletin 190, April 1920, 71pp
  15. Hofueck, J. A., Ibrahim I. O. and Mattock A. H., 'Shear Transfer in Reinforced Concrete,' J ACI., Proc., Vol.66, Feb. 1969, pp.119-128
  16. Yankelevsky, D. Z., 'Bond Action Between Concrete and a Deformed Bar-A New Model,' ACI Journal, Vol.82, No.2, March-April, 1985, pp.154- 161
  17. Sokolnikoff, I. S., Mathematical Theory of Elasticity, 2nd Edition, McGraw-Hill Book Co. New York, 1956, 476pp
  18. Marti, P., 'BasicTools of Reinforced Concrete Beam Design,' ACI Journal, Vol.82, No.1, January-February, 1985, pp.4-56
  19. Sanders, D. H., 'Design and Behavior of Anchorage Zones in Post-Tensioned Concrete Members,' Ph. D. Dissertation, The University of Texas at Austin, August 1990
  20. Wollmann, G. P., Anchorage Zones in Post-tensioned Concrete Structures, Ph. D. Dissertation, University of Texas at Austin, 1992, pp.62-98